A violent gang that “cast a shadow of violence” over Asian neighborhoods in Queens and Brooklyn was smashed by the feds this week as eight members were collared and charged with crimes ranging from extortion to illegal gambling.

Zheng Organization hoods ran illegal poker games in a Sunset Park storefront and peddled MDMA and Ketamine in both boroughs, prosecutors said.

The crew, with members ranging in age from 25 to 45, ordered beatings of those who owed them money or interrupted their illicit businesses, according to court papers.

The organization often cleared up to $2,000 a day through illegal gambling operations, the feds allege.

The alleged leader of the group, Qian “Cash” Zheng, 44, faces up to 164 years in prison if convicted on all the charges against him.

Prosecutors said Zheng frequently solicited goons to cripple adversaries and lobbied one to “scar” a woman’s face.